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a1b4220a916a1c67c2e63b0b9e11abe261aa82f2
openairinterface5g/openair1/SIMULATION/NR_PHY/pucchsim.c
T
Laurent THOMAS a1b4220a91 Exclusively use OAI_RNGSEED env variable everywhere 
Hide normal table initialization of Ziggurat generator from outside to
force the usage of randominit() for RNG initialization. In this step,
remove the randominit() seed parameter and only rely on OAI_RNGSEED for
a consistent RNG initialization, as this parameter was used differently
("0" as fixed number or to force a random seed).

Now, only use OAI_RNGSEED env variable to force the usage of a fixed
seed.
2025-12-01 12:10:31 +01:00

806 lines
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/*
* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The OpenAirInterface Software Alliance licenses this file to You under
* the OAI Public License, Version 1.1 (the "License"); you may not use this file
* except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.openairinterface.org/?page_id=698
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*-------------------------------------------------------------------------------
* For more information about the OpenAirInterface (OAI) Software Alliance:
* contact@openairinterface.org
*/
#include <string.h>
#include <math.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <sys/mman.h>
#include "common/config/config_userapi.h"
#include "common/utils/load_module_shlib.h"
#include "common/utils/nr/nr_common.h"
#include "common/utils/LOG/log.h"
#include "common/ran_context.h"
#include "PHY/types.h"
#include "PHY/defs_nr_common.h"
#include "PHY/defs_nr_UE.h"
#include "PHY/defs_gNB.h"
#include "PHY/NR_REFSIG/refsig_defs_ue.h"
#include "PHY/MODULATION/modulation_eNB.h"
#include "PHY/MODULATION/modulation_UE.h"
#include "PHY/NR_ESTIMATION/nr_ul_estimation.h"
#include "PHY/INIT/nr_phy_init.h"
#include "PHY/NR_TRANSPORT/nr_transport_proto.h"
#include "PHY/NR_UE_TRANSPORT/nr_transport_proto_ue.h"
#include "PHY/NR_UE_TRANSPORT/pucch_nr.h"
#include "SCHED_NR/sched_nr.h"
#include "openair1/SIMULATION/TOOLS/sim.h"
#include "openair1/SIMULATION/RF/rf.h"
#include "openair1/SIMULATION/NR_PHY/nr_unitary_defs.h"
#include "executables/nr-uesoftmodem.h"
#include "nfapi/oai_integration/vendor_ext.h"
#include "executables/softmodem-common.h"
THREAD_STRUCT thread_struct;
PHY_VARS_gNB *gNB;
PHY_VARS_NR_UE *UE;
RAN_CONTEXT_t RC;
openair0_config_t openair0_cfg[MAX_CARDS];
int32_t uplink_frequency_offset[MAX_NUM_CCs][4];
uint64_t downlink_frequency[MAX_NUM_CCs][4];
double cpuf;
uint8_t const nr_rv_round_map[4] = {0, 2, 3, 1};
// needed for some functions
PHY_VARS_NR_UE *PHY_vars_UE_g[1][1] = {{NULL}};
static softmodem_params_t softmodem_params;
softmodem_params_t *get_softmodem_params(void) {
return &softmodem_params;
}
void init_downlink_harq_status(NR_DL_UE_HARQ_t *dl_harq) {}
NR_IF_Module_t *NR_IF_Module_init(int Mod_id) { return (NULL); }
nfapi_mode_t nfapi_getmode(void) { return NFAPI_MODE_UNKNOWN; }
void inc_ref_sched_response(int _)
{
LOG_E(PHY, "fatal\n");
exit(1);
}
void deref_sched_response(int _)
{
LOG_E(PHY, "fatal\n");
exit(1);
}
nrUE_params_t nrUE_params={0};
nrUE_params_t *get_nrUE_params(void) {
return &nrUE_params;
}
configmodule_interface_t *uniqCfg = NULL;
int main(int argc, char **argv)
{
stop = false;
__attribute__((unused)) struct sigaction oldaction;
sigaction(SIGINT, &sigint_action, &oldaction);
int i;//,l;
double sigma2, sigma2_dB=10,SNR,snr0=-2.0,snr1=2.0;
double cfo=0;
uint8_t snr1set=0;
double **s_re,**s_im,**r_re,**r_im;
//int sync_pos, sync_pos_slot;
//FILE *rx_frame_file;
FILE *output_fd = NULL;
//uint8_t write_output_file=0;
//int result;
//int freq_offset;
//int subframe_offset;
//char fname[40], vname[40];
int trial,n_trials=100,n_errors=0,ack_nack_errors=0,sr_errors=0;
int ret = 1;
uint8_t transmission_mode = 1,n_tx=1,n_rx=1;
uint16_t Nid_cell=0;
uint64_t SSB_positions=0x01;
channel_desc_t *UE2gNB;
int format=0;
//uint8_t extended_prefix_flag=0;
FILE *input_fd=NULL;
//uint8_t nacktoack_flag=0;
int16_t amp=0x7FFF;
int nr_slot_tx=0;
int nr_frame_tx=0;
uint64_t actual_payload = 0, payload_received = 0;
bool random_payload = true;
int nr_bit=1; // maximum value possible is 2
uint8_t m0=0;// higher layer paramater initial cyclic shift
uint8_t nrofSymbols=1; //number of OFDM symbols can be 1-2 for format 1
uint8_t startingSymbolIndex=0; // resource allocated see 9.2.1, 38.213 for more info.should be actually present in the resource set provided
uint16_t startingPRB=0,startingPRB_intraSlotHopping=0; //PRB number not sure see 9.2.1, 38.213 for more info. Should be actually present in the resource set provided
uint16_t nrofPRB=2;
uint8_t timeDomainOCC=0;
SCM_t channel_model=AWGN;//Rayleigh1_anticorr;
double DS_TDL = .03;
double delay_us = 0;
int N_RB_DL=273,mu=1;
float target_error_rate=0.001;
int frame_length_complex_samples;
//int frame_length_complex_samples_no_prefix;
NR_DL_FRAME_PARMS *frame_parms;
//unsigned char frame_type = 0;
int loglvl=OAILOG_WARNING;
int sr_flag = 0;
int pucch_DTX_thres = 0;
cpuf = get_cpu_freq_GHz();
bool print_perf = false;
if ((uniqCfg = load_configmodule(argc, argv, CONFIG_ENABLECMDLINEONLY)) == 0) {
exit_fun("[NR_PUCCHSIM] Error, configuration module init failed\n");
}
randominit();
logInit();
int c;
while ((c = getopt(argc, argv, "--:O:f:hA:f:g:i:I:P:B:b:t:T:m:n:r:o:s:S:x:y:z:N:F:GR:IL:q:cd:C")) != -1) {
/* ignore long options starting with '--', option '-O' and their arguments that are handled by configmodule */
/* with this opstring getopt returns 1 for non-option arguments, refer to 'man 3 getopt' */
if (c == 1 || c == '-' || c == 'O')
continue;
printf("handling optarg %c\n",c);
switch (c) {
case 'f':
//write_output_file=1;
output_fd = fopen(optarg,"w");
if (output_fd==NULL) {
printf("Error opening %s\n",optarg);
exit(-1);
}
break;
case 'g':
switch((char)*optarg) {
case 'A':
channel_model=SCM_A;
break;
case 'B':
channel_model=SCM_B;
break;
case 'C':
channel_model=SCM_C;
break;
case 'D':
channel_model=SCM_D;
break;
case 'E':
channel_model=EPA;
break;
case 'F':
channel_model=EVA;
break;
case 'G':
channel_model=ETU;
break;
case 'H':
channel_model = TDL_C;
DS_TDL = .030; // 30 ns
break;
case 'I':
channel_model = TDL_C;
DS_TDL = .3; // 300ns
break;
case 'J':
channel_model=TDL_D;
DS_TDL = .03;
break;
default:
printf("Unsupported channel model!\n");
exit(-1);
}
break;
case 'n':
n_trials = atoi(optarg);
break;
case 'o':
cfo = atof(optarg);
printf("Setting CFO to %f Hz\n",cfo);
break;
case 's':
snr0 = atof(optarg);
printf("Setting SNR0 to %f\n",snr0);
break;
case 'S':
snr1 = atof(optarg);
snr1set=1;
printf("Setting SNR1 to %f\n",snr1);
break;
case 't':
pucch_DTX_thres= atoi(optarg);
break;
/*
case 'p':
extended_prefix_flag=1;
break;
case 'd':
frame_type = 1;
break;
case 'r':
ricean_factor = pow(10,-.1*atof(optarg));
if (ricean_factor>1) {
printf("Ricean factor must be between 0 and 1\n");
exit(-1);
}
break;
*/
case 'd':
delay_us=atof(optarg);
break;
case 'x':
transmission_mode=atoi(optarg);
if ((transmission_mode!=1) &&
(transmission_mode!=2) &&
(transmission_mode!=6)) {
printf("Unsupported transmission mode %d\n",transmission_mode);
exit(-1);
}
break;
case 'y':
n_tx=atoi(optarg);
if ((n_tx==0) || (n_tx>2)) {
printf("Unsupported number of tx antennas %d\n",n_tx);
exit(-1);
}
break;
case 'z':
n_rx=atoi(optarg);
if ((n_rx==0) || (n_rx>8)) {
printf("Unsupported number of rx antennas %d\n",n_rx);
exit(-1);
}
break;
case 'N':
Nid_cell = atoi(optarg);
break;
case 'R':
N_RB_DL = atoi(optarg);
break;
case 'F':
input_fd = fopen(optarg,"r");
if (input_fd==NULL) {
printf("Problem with filename %s\n",optarg);
exit(-1);
}
break;
case 'L':
loglvl = atoi(optarg);
break;
case 'i':
nrofSymbols=(uint8_t)atoi(optarg);
break;
case 'I':
startingSymbolIndex=(uint8_t)atoi(optarg);
break;
case 'r':
startingPRB=atoi(optarg);
break;
case 'q':
nrofPRB=atoi(optarg);
break;
case 'P':
format=atoi(optarg);
break;
case 'm':
m0=atoi(optarg);
break;
case 'b':
nr_bit=atoi(optarg);
break;
case 'c':
sr_flag=1;
break;
case 'B':
actual_payload=atoi(optarg);
random_payload = false;
break;
case 'T':
//nacktoack_flag=(uint8_t)atoi(optarg);
target_error_rate=0.001;
break;
case 'C':
print_perf = 1;
cpu_meas_enabled = 1;
break;
default:
case 'h':
printf("%s -h(elp) -p(extended_prefix) -N cell_id -f output_filename -F input_filename -g channel_model -n n_frames -t Delayspread -s snr0 -S snr1 -x transmission_mode -y TXant -z RXant -i Intefrence0 -j Interference1 -A interpolation_file -C(alibration offset dB) -N CellId\n", argv[0]);
//printf("-C Generate Calibration information for Abstraction (effective SNR adjustment to remove Pe bias w.r.t. AWGN)\n");
printf("-A Interpolation_filname Run with Abstraction to generate Scatter plot using interpolation polynomial in file\n");
printf("-b number of HARQ bits (1-2)\n");
printf("-B payload to be transmitted on PUCCH\n");
printf("-c Activate scheduling request\n");
printf("-d Use TDD\n");
printf("-f Output filename (.txt format) for Pe/SNR results\n");
printf("-F Input filename (.txt format) for RX conformance testing\n");
printf("-g [A,B,C,D,E,F,G] Use 3GPP SCM (A,B,C,D) or 36-101 (E-EPA,F-EVA,G-ETU) models (ignores delay spread and Ricean factor)\n");
printf("-i Enter number of ofdm symbols for pucch\n");
printf("-I Starting symbol index for pucch\n");
printf("-h This message\n");
printf("-m initial cyclic shift m0\n");
printf("-n Number of frames to simulate\n");
printf("-N Nid_cell\n");
printf("-o Carrier frequency offset in Hz\n");
printf("-O oversampling factor (1,2,4,8,16)\n");
printf("-p Use extended prefix mode\n");
printf("-P Enter the format of PUCCH\n");
printf("-q PUCCH number of PRB\n");
printf("-r PUCCH starting PRB\n");
printf("-R N_RB_DL\n");
printf("-s Starting SNR, runs from SNR0 to SNR0 + 5 dB. If n_frames is 1 then just SNR is simulated\n");
printf("-S Ending SNR, runs from SNR0 to SNR1\n");
printf("-t Delay spread for multipath channel\n");
printf("-T to check nacktoack miss for format 1\n");
printf("-x Transmission mode (1,2,6 for the moment)\n");
printf("-y Number of TX antennas used in eNB\n");
printf("-z Number of RX antennas used in UE\n");
printf("-C print CPU cost\n");
exit (-1);
break;
}
}
double phase = (1<<mu)*30e-3*delay_us;
set_glog(loglvl);
if (snr1set==0) snr1 = snr0+10;
printf("Initializing gNodeB for mu %d, N_RB_DL %d, n_rx %d\n",mu,N_RB_DL,n_rx);
if((format!=0) && (format!=1) && (format!=2)){
printf("PUCCH format %d not supported\n",format);
exit(0);
}
AssertFatal(((format < 2)&&(nr_bit<3)&&(actual_payload<5)) ||
((format == 2)&&(nr_bit>2)&&(nr_bit<65)),"illegal combination format %d, nr_bit %d\n",
format,nr_bit);
int do_DTX=0;
if ((format < 2) && (actual_payload == 4)) do_DTX=1;
if (random_payload) {
double tmp = uniformrandom();
memcpy(&actual_payload, &tmp, sizeof(actual_payload));
}
actual_payload &= nr_bit < 64 ? (1UL << nr_bit) - 1: 0xffffffffffffffff;
printf("Transmitted payload is %lu, do_DTX = %d\n",actual_payload,do_DTX);
RC.gNB = calloc(1, sizeof(PHY_VARS_gNB *));
RC.gNB[0] = calloc(1,sizeof(PHY_VARS_gNB));
gNB = RC.gNB[0];
gNB->pucch0_thres = pucch_DTX_thres;
frame_parms = &gNB->frame_parms; //to be initialized I suppose (maybe not necessary for PBCH)
frame_parms->nb_antennas_tx = n_tx;
frame_parms->nb_antennas_rx = n_rx;
frame_parms->N_RB_DL = N_RB_DL;
frame_parms->N_RB_UL = N_RB_DL;
frame_parms->Nid_cell = Nid_cell;
nfapi_nr_config_request_scf_t *cfg = &gNB->gNB_config;
cfg->carrier_config.num_tx_ant.value = n_tx;
cfg->carrier_config.num_rx_ant.value = n_rx;
nr_phy_config_request_sim(gNB,N_RB_DL,N_RB_DL,mu,Nid_cell,SSB_positions);
// TDD configuration
gNB->gNB_config.tdd_table.tdd_period.value = 6;
do_tdd_config_sim(gNB, mu);
phy_init_nr_gNB(gNB);
/* RU handles rxdataF, and gNB just has a pointer. Here, we don't have an RU,
* so we need to allocate that memory as well. */
for (i = 0; i < n_rx; i++)
gNB->common_vars.rxdataF[0][i] = malloc16_clear(gNB->frame_parms.samples_per_frame_wCP * sizeof(c16_t));
double fs,txbw,rxbw;
uint32_t samples;
get_samplerate_and_bw(mu,
N_RB_DL,
frame_parms->threequarter_fs,
&fs,
&samples,
&txbw,
&rxbw);
UE2gNB = new_channel_desc_scm(n_tx, n_rx, channel_model, fs, 0, txbw, DS_TDL, 0.0, CORR_LEVEL_LOW, 0, 0, 0, 0);
if (UE2gNB==NULL) {
printf("Problem generating channel model. Exiting.\n");
exit(-1);
}
frame_length_complex_samples = frame_parms->samples_per_subframe*NR_NUMBER_OF_SUBFRAMES_PER_FRAME;
//frame_length_complex_samples_no_prefix = frame_parms->samples_per_subframe_wCP;
s_re = malloc(n_tx*sizeof(double*));
s_im = malloc(n_tx*sizeof(double*));
r_re = malloc(n_rx*sizeof(double*));
r_im = malloc(n_rx*sizeof(double*));
memcpy((void *)&gNB->frame_parms, (void *)frame_parms, sizeof(*frame_parms));
for (int aatx=0; aatx<n_tx; aatx++) {
s_re[aatx] = calloc(1,frame_length_complex_samples*sizeof(double));
s_im[aatx] = calloc(1,frame_length_complex_samples*sizeof(double));
}
for (int aarx=0; aarx<n_rx; aarx++) {
r_re[aarx] = calloc(1,frame_length_complex_samples*sizeof(double));
r_im[aarx] = calloc(1,frame_length_complex_samples*sizeof(double));
}
uint8_t mcs=0;
int shift = 0;
if(format==0){
if (sr_flag)
shift = 1<<nr_bit;
if (nr_bit ==0)
mcs=table1_mcs[0];
else if(nr_bit==1)
mcs=table1_mcs[actual_payload+shift];
else if(nr_bit==2)
mcs=table2_mcs[actual_payload+shift];
else AssertFatal(1==0,"Either nr_bit %d or sr_flag %d must be non-zero\n", nr_bit, sr_flag);
}
startingPRB_intraSlotHopping = N_RB_DL-1;
uint32_t hopping_id = Nid_cell;
uint32_t dmrs_scrambling_id = 0;
uint32_t data_scrambling_id = 0;
//configure UE
UE = calloc(1,sizeof(PHY_VARS_NR_UE));
memcpy(&UE->frame_parms,frame_parms,sizeof(NR_DL_FRAME_PARMS));
UE->frame_parms.nb_antennas_rx=1;
if (init_nr_ue_signal(UE, 1) != 0)
{
printf("Error at UE NR initialisation\n");
exit(-1);
}
fapi_nr_ul_config_pucch_pdu pucch_tx_pdu;
if (format==0) {
pucch_tx_pdu.format_type = 0;
pucch_tx_pdu.nr_of_symbols = nrofSymbols;
pucch_tx_pdu.start_symbol_index = startingSymbolIndex;
pucch_tx_pdu.bwp_start = 0;
pucch_tx_pdu.prb_start = startingPRB;
pucch_tx_pdu.hopping_id = hopping_id;
pucch_tx_pdu.group_hop_flag = 0;
pucch_tx_pdu.sequence_hop_flag = 0;
pucch_tx_pdu.freq_hop_flag = 0;
pucch_tx_pdu.mcs = mcs;
pucch_tx_pdu.initial_cyclic_shift = 0;
pucch_tx_pdu.second_hop_prb = startingPRB_intraSlotHopping;
}
if (format==2) {
pucch_tx_pdu.format_type = 2;
pucch_tx_pdu.rnti = 0x1234;
pucch_tx_pdu.n_bit = nr_bit;
pucch_tx_pdu.payload = actual_payload;
pucch_tx_pdu.nr_of_symbols = nrofSymbols;
pucch_tx_pdu.start_symbol_index = startingSymbolIndex;
pucch_tx_pdu.bwp_start = 0;
pucch_tx_pdu.prb_start = startingPRB;
pucch_tx_pdu.prb_size = nrofPRB;
pucch_tx_pdu.hopping_id = hopping_id;
pucch_tx_pdu.group_hop_flag = 0;
pucch_tx_pdu.sequence_hop_flag = 0;
pucch_tx_pdu.freq_hop_flag = 0;
pucch_tx_pdu.dmrs_scrambling_id = dmrs_scrambling_id;
pucch_tx_pdu.data_scrambling_id = data_scrambling_id;
pucch_tx_pdu.second_hop_prb = startingPRB_intraSlotHopping;
}
pucch_GroupHopping_t PUCCH_GroupHopping = pucch_tx_pdu.group_hop_flag + (pucch_tx_pdu.sequence_hop_flag<<1);
double tx_level_fp = 100.0;
c16_t **rxdataF = gNB->common_vars.rxdataF[0];
for(SNR = snr0; SNR <= snr1 && !stop; SNR += 1) {
ack_nack_errors=0;
sr_errors = 0;
n_errors = 0;
c16_t **txdataF = gNB->common_vars.txdataF[0];
for (trial = 0; trial < n_trials && !stop; trial++) {
for (int aatx=0;aatx<1;aatx++)
bzero(txdataF[aatx],frame_parms->ofdm_symbol_size*sizeof(int));
if(format==0 && do_DTX==0){
nr_generate_pucch0(UE, txdataF, frame_parms, amp, nr_slot_tx, &pucch_tx_pdu);
} else if (format == 1 && do_DTX==0){
nr_generate_pucch1(UE, txdataF, frame_parms, amp, nr_slot_tx, &pucch_tx_pdu);
} else if (do_DTX == 0){
nr_generate_pucch2(UE, txdataF, frame_parms, amp, nr_slot_tx, &pucch_tx_pdu);
}
// SNR Computation
// standard says: SNR = S / N, where S is the total signal energy, N is the noise energy in the transmission bandwidth (i.e. N_RB_DL resource blocks)
// txlev = S.
int txlev = signal_energy((int32_t *)&txdataF[0][startingSymbolIndex*frame_parms->ofdm_symbol_size], frame_parms->ofdm_symbol_size);
// sigma2 is variance per dimension, so N/(N_RB*12)
// so, sigma2 = N/(N_RB_DL*12) => (S/SNR)/(N_RB*12)
int N_RB = (format == 0 || format == 1) ? 1 : nrofPRB;
sigma2_dB = 10*log10(txlev*(N_RB_DL/N_RB))-SNR;
sigma2 = pow(10.0,sigma2_dB/10.0);
if (n_trials==1) printf("txlev %d (%f dB), offset %d, sigma2 %f ( %f dB)\n",txlev,10*log10(txlev),startingSymbolIndex*frame_parms->ofdm_symbol_size,sigma2,sigma2_dB);
for (int symb=0; symb<gNB->frame_parms.symbols_per_slot;symb++) {
if (symb<startingSymbolIndex || symb >= startingSymbolIndex+nrofSymbols) {
int i0 = symb*gNB->frame_parms.ofdm_symbol_size;
for (int re=0;re<N_RB_DL*12;re++) {
i=i0+((gNB->frame_parms.first_carrier_offset + re)%gNB->frame_parms.ofdm_symbol_size);
for (int aarx=0;aarx<n_rx;aarx++) {
double nr = sqrt(sigma2/2)*gaussdouble(0.0,1.0);
double ni = sqrt(sigma2/2)*gaussdouble(0.0,1.0);
rxdataF[aarx][i].r = (int16_t)(tx_level_fp * (nr) / sqrt((double)txlev));
rxdataF[aarx][i].i = (int16_t)(tx_level_fp * (ni) / sqrt((double)txlev));
}
}
}
}
random_channel(UE2gNB,0);
freq_channel(UE2gNB,N_RB_DL,2*N_RB_DL+1,15<<mu);
for (int symb=0; symb<nrofSymbols; symb++) {
int i0 = (startingSymbolIndex + symb)*gNB->frame_parms.ofdm_symbol_size;
for (int re=0;re<N_RB_DL*12;re++) {
i=i0+((gNB->frame_parms.first_carrier_offset + re)%gNB->frame_parms.ofdm_symbol_size);
struct complexd phasor;
phasor.r = cos(2*M_PI*phase*re);
phasor.i = sin(2*M_PI*phase*re);
for (int aarx=0;aarx<n_rx;aarx++) {
double txr = (double)(((int16_t *)txdataF[0])[(i<<1)]);
double txi = (double)(((int16_t *)txdataF[0])[1+(i<<1)]);
double rxr={0},rxi={0};
for (int l = 0; l<UE2gNB->channel_length; l++) {
rxr = txr*UE2gNB->chF[aarx][l].r - txi*UE2gNB->chF[aarx][l].i;
rxi = txr*UE2gNB->chF[aarx][l].i + txi*UE2gNB->chF[aarx][l].r;
}
double rxr_tmp = rxr*phasor.r - rxi*phasor.i;
rxi = rxr*phasor.i + rxi*phasor.r;
rxr = rxr_tmp;
double nr = sqrt(sigma2/2)*gaussdouble(0.0,1.0);
double ni = sqrt(sigma2/2)*gaussdouble(0.0,1.0);
rxdataF[aarx][i].r = (int16_t)(tx_level_fp * (rxr + nr) / sqrt((double)txlev));
rxdataF[aarx][i].i = (int16_t)(tx_level_fp * (rxi + ni) / sqrt((double)txlev));
if (n_trials==1 && fabs(txr) > 0) printf("symb %d, re %d , aarx %d : txr %f, txi %f, chr %f, chi %f, nr %f, ni %f, rxr %f, rxi %f => %d,%d\n",
symb, re, aarx, txr,txi,
UE2gNB->chF[aarx][re].r,UE2gNB->chF[aarx][re].i,
nr,ni, rxr,rxi,
rxdataF[aarx][i].r,rxdataF[aarx][i].i);
}
}
}
int rxlev=0;
for (int aarx=0;aarx<n_rx;aarx++) rxlev += signal_energy((int32_t*)&rxdataF[aarx][startingSymbolIndex*frame_parms->ofdm_symbol_size],
frame_parms->ofdm_symbol_size);
int rxlev_pucch=0;
for (int aarx=0;aarx<n_rx;aarx++) rxlev_pucch += signal_energy((int32_t*)&rxdataF[aarx][startingSymbolIndex*frame_parms->ofdm_symbol_size],
12);
// set UL mask for pucch allocation
uint32_t rb_mask_ul[14][9] = {0};
for (int s=0;s<frame_parms->symbols_per_slot;s++){
if (s>=startingSymbolIndex && s<(startingSymbolIndex+nrofSymbols))
for (int rb=0; rb<N_RB; rb++) {
int rb2 = rb+startingPRB;
rb_mask_ul[s][rb2 >> 5] |= (1 << (rb2 & 31));
}
}
// noise measurement (all PRBs)
gNB_I0_measurements(gNB, nr_slot_tx, 0, gNB->frame_parms.symbols_per_slot, rb_mask_ul);
start_meas(&gNB->phy_proc_rx);
if (n_trials==1) printf("noise rxlev %d (%d dB), rxlev pucch %d dB sigma2 %f dB, SNR %f, TX %f, I0 (pucch) %d, I0 (avg) %d\n",rxlev,dB_fixed(rxlev),dB_fixed(rxlev_pucch),sigma2_dB,SNR,10*log10((double)txlev*UE->frame_parms.ofdm_symbol_size/12),gNB->measurements.n0_subband_power_tot_dB[startingPRB],gNB->measurements.n0_subband_power_avg_dB);
if(format==0){
nfapi_nr_uci_pucch_pdu_format_0_1_t uci_pdu;
nfapi_nr_pucch_pdu_t pucch_pdu;
gNB->phy_stats[0].rnti = 0x1234;
pucch_pdu.rnti = 0x1234;
pucch_pdu.subcarrier_spacing = 1;
pucch_pdu.group_hop_flag = PUCCH_GroupHopping&1;
pucch_pdu.sequence_hop_flag = (PUCCH_GroupHopping>>1)&1;
pucch_pdu.bit_len_harq = nr_bit;
pucch_pdu.bit_len_csi_part1 = 0;
pucch_pdu.bit_len_csi_part2 = 0;
pucch_pdu.sr_flag = sr_flag;
pucch_pdu.nr_of_symbols = nrofSymbols;
pucch_pdu.hopping_id = hopping_id;
pucch_pdu.initial_cyclic_shift = 0;
pucch_pdu.start_symbol_index = startingSymbolIndex;
pucch_pdu.prb_start = startingPRB;
pucch_pdu.prb_size = 1;
pucch_pdu.bwp_start = 0;
pucch_pdu.bwp_size = N_RB_DL;
if (nrofSymbols>1) {
pucch_pdu.freq_hop_flag = 1;
pucch_pdu.second_hop_prb = N_RB_DL-1;
}
else pucch_pdu.freq_hop_flag = 0;
nr_decode_pucch0(gNB, rxdataF, nr_frame_tx, nr_slot_tx,&uci_pdu,&pucch_pdu);
if(sr_flag==1){
if (uci_pdu.sr.sr_indication == 0 || uci_pdu.sr.sr_confidence_level == 1)
sr_errors+=1;
}
// harq value 0 -> pass
nfapi_nr_harq_t *harq_list = uci_pdu.harq.harq_list;
// confidence value 0 -> good confidence
const int confidence_lvl = uci_pdu.harq.harq_confidence_level;
if(nr_bit>0){
if (nr_bit==1 && do_DTX == 0)
ack_nack_errors+=(actual_payload^(!harq_list[0].harq_value));
else if (do_DTX == 0)
ack_nack_errors+=(((actual_payload&1)^(!harq_list[1].harq_value))+((actual_payload>>1)^(!harq_list[0].harq_value)));
else if ((!confidence_lvl && !harq_list[0].harq_value) ||
(!confidence_lvl && nr_bit == 2 && !harq_list[1].harq_value))
ack_nack_errors++;
}
}
else if (format==1) {
nr_decode_pucch1((c16_t **)rxdataF,PUCCH_GroupHopping,hopping_id,
&(payload_received),frame_parms,amp,nr_slot_tx,
m0,nrofSymbols,startingSymbolIndex,startingPRB,
startingPRB_intraSlotHopping,timeDomainOCC,nr_bit);
if(nr_bit==1)
ack_nack_errors+=((actual_payload^payload_received)&1);
else
ack_nack_errors+=((actual_payload^payload_received)&1) + (((actual_payload^payload_received)&2)>>1);
}
else if (format==2) {
nfapi_nr_uci_pucch_pdu_format_2_3_4_t uci_pdu={0};
nfapi_nr_pucch_pdu_t pucch_pdu={0};
pucch_pdu.rnti = 0x1234;
pucch_pdu.subcarrier_spacing = 1;
pucch_pdu.group_hop_flag = PUCCH_GroupHopping&1;
pucch_pdu.sequence_hop_flag = (PUCCH_GroupHopping>>1)&1;
pucch_pdu.bit_len_csi_part1 = nr_bit;
pucch_pdu.bit_len_harq = 0;
pucch_pdu.bit_len_csi_part2 = 0;
pucch_pdu.sr_flag = 0;
pucch_pdu.nr_of_symbols = nrofSymbols;
pucch_pdu.hopping_id = hopping_id;
pucch_pdu.initial_cyclic_shift = 0;
pucch_pdu.start_symbol_index = startingSymbolIndex;
pucch_pdu.prb_size = nrofPRB;
pucch_pdu.prb_start = startingPRB;
pucch_pdu.dmrs_scrambling_id = dmrs_scrambling_id;
pucch_pdu.data_scrambling_id = data_scrambling_id;
if (nrofSymbols>1) {
pucch_pdu.freq_hop_flag = 1;
pucch_pdu.second_hop_prb = N_RB_DL-1;
}
else pucch_pdu.freq_hop_flag = 0;
nr_decode_pucch2(gNB, rxdataF, nr_frame_tx, nr_slot_tx, &uci_pdu, &pucch_pdu);
int csi_part1_bytes=pucch_pdu.bit_len_csi_part1>>3;
if ((pucch_pdu.bit_len_csi_part1&7) > 0) csi_part1_bytes++;
for (int i=0;i<csi_part1_bytes;i++) {
if (uci_pdu.csi_part1.csi_part1_payload[i] != ((uint8_t*)&actual_payload)[i]) {
ack_nack_errors++;
break;
}
}
free(uci_pdu.csi_part1.csi_part1_payload);
}
stop_meas(&gNB->phy_proc_rx);
n_errors=((actual_payload^payload_received)&1)+(((actual_payload^payload_received)&2)>>1)+(((actual_payload^payload_received)&4)>>2)+n_errors;
}
if (sr_flag == 1)
printf("SR: SNR=%f, n_trials=%d, n_bit_errors=%d\n",SNR,n_trials,sr_errors);
if (print_perf) {
time_stats_t *ts = &gNB->phy_proc_rx;
printf("cpu time for pucch format %d: per block %.2f us; nb blocks %d, max time %.2f;\n",
format,
ts->diff / ts->trials / cpuf / 1000.0,
ts->trials,
ts->max / cpuf / 1000.0);
reset_meas(ts);
}
if(nr_bit > 0)
printf("ACK/NACK: SNR=%f, n_trials=%d, n_bit_errors=%d\n",SNR,n_trials,ack_nack_errors);
if((float)(ack_nack_errors+sr_errors)/(float)(n_trials)<=target_error_rate){
printf("PUCCH test OK\n");
ret = 0;
break;
}
}
free_channel_desc_scm(UE2gNB);
term_freq_channel();
int nb_slots_to_set = (1 << mu) * NR_NUMBER_OF_SUBFRAMES_PER_FRAME;
for (int i = 0; i < nb_slots_to_set; ++i)
free(gNB->gNB_config.tdd_table.max_tdd_periodicity_list[i].max_num_of_symbol_per_slot_list);
free(gNB->gNB_config.tdd_table.max_tdd_periodicity_list);
for (int j = 0; j < gNB->common_vars.num_beams_period; j++) {
for (i = 0; i < n_rx; i++)
free(gNB->common_vars.rxdataF[j][i]);
}
phy_free_nr_gNB(gNB);
free(RC.gNB[0]);
free(RC.gNB);
term_nr_ue_signal(UE, 1);
free(UE);
for (int aatx=0; aatx<n_tx; aatx++) {
free(s_re[aatx]);
free(s_im[aatx]);
}
for (int aarx=0; aarx<n_rx; aarx++) {
free(r_re[aarx]);
free(r_im[aarx]);
}
free(s_re);
free(s_im);
free(r_re);
free(r_im);
if (output_fd) fclose(output_fd);
if (input_fd) fclose(input_fd);
loader_reset();
logTerm();
return ret;
}
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